Mortierella is the zygomycete genus with the largest number of validly described species. These fungi can be found on almost any substrate and they are very common in soil. The undulate or wavy colony is readily observed on nutrient-rich media whereas sporulation only may be induced on a variety of nutrient-poor media. Mortierella has been divided into several sections based on morphology (Gams, 1969, 1977, 1978). Gams et al. (1972) and Kuhlman (1972, 1975) analyzed the parameters necessary for zygospore formation in several species of Mortierella. Degawa and Tokumasu (1997, 1998a, 1998b) studied zygospore ontogeny in four species of Mortierella. Some species of Syncephalis are restricted to Mortierella spp. such as S. hypogena (Benjamin, 1985). and S. tenuis (Thaxter, 1897; Kuzuha, 1973).